require("InventoryCache")

Crafter = {}

function Crafter:new(o)
    o = o or {}
    setmetatable(o, self)
    self.__index = self
    self.items = {}
    self.quants = {}
    self.slots = {}
    self.inventoryCache = InventoryCache:new()
    return o
end

function Crafter:AddIngredient(item, slots)
    table.insert(self.items, item)
    table.insert(self.quants, table.getn(slots))
    table.insert(self.slots, slots)
end

function Crafter:Craft()
    print("Crafting...")
    --Update cache
    self.inventoryCache:Update()

    if(table.getn(self.items) == 0) then
        print("No Items added")
    end

    local noncraftSlots = {4,8,12,13,14,15,16}
    for i=1,table.getn(self.items) do
        --Get first item
        item1 = self.inventoryCache:FindItem(self.items[i])
        if(item1 == -1) then
            print(self.items[i] .. " not found")
            return
        end
        print(self.items[i] .. " found in slot " .. item1)
        --Check for a good spot out of the grid if applicable
        goodSpot = 0
        for j, v in pairs(noncraftSlots) do
            --check if its already in a good place
            if(v == item1) then
                break
            end
            invCache = self.inventoryCache:IsSlotOpen(v)
            if(invCache) then
                goodSpot = v
                break
            end
        end

        if(goodSpot ~= 0) then
            self.inventoryCache:MoveItem(item1, goodSpot)
        end
    end

    for i=1,table.getn(self.items) do
        item1 = self.inventoryCache:FindItem(self.items[i])
        if(item1 ~= -1) then
            cnt = turtle.getItemCount(item1)
            if (cnt < self.quants[i]) then
                print("Not enough to craft")
                return
            end
            cntPer = cnt / self.quants[i]
            for j, v in pairs(self.slots[i]) do
                self.inventoryCache:MoveItem(item1, v, cntPer)
            end
        end
    end

    print("Crafting")
    turtle.select(1)
    turtle.craft()
end